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Using spatial presentation of bus GPS data to identify and justify bus priority upgrades


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Claire Rusin, Geeta Kumar, Tom van Drempt, Matthew Goganovski

Published in: Education
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Using spatial presentation of bus GPS data to identify and justify bus priority upgrades

  1. 1. C. Rusin and G. Kumar Spatial presentation of PTIPS data for Bus Priority Planning July 2016
  2. 2. OUTLINE Introduction (the story) The bus priority story Data analysis Geospatial analysis Interpretation of data Presentation of analysis Project outcomes Next steps
  3. 3. Sydney’s bus network:  13 bus contract regions  Over 600 bus routes  In the vicinity of 370 million bus passengers over a year  2.54 billion passenger kilometres in 2015 (1.58 billion in Melbourne) CONTEXT: ABOUT SYDNEY BUS SERVICES
  4. 4. Bus priority in Sydney  600 bus routes, thousands of services each day  Over 1 million passengers transported per day SYDNEY’S BUS FUTURE (TFNSW 2013)  ‘Simpler, faster, better bus services’:  ‘turn up and go’ services  Rapid services av. speed above 25 km/hr  Reliability of services (to timetable)  Tiers of the bus network:  Rapid routes (efficiency, linking centres)  Suburban routes (frequency)  Local routes (coverage)  Issues affecting bus efficiency:  Competing demands for road space  Constrained by congested road networks THE BUS PRIORITY STORY A B Rapid Suburban Local
  5. 5. CUSTOMER PERSPECTIVE But what happens when Sydney’s roads look like this?
  6. 6. BUS PRIORITY IN SYDNEY Bus priority story – what do we want?  Bus network which is reliable, efficiency, understandable  NSW Premiere’s target for 90% of peak travel on road routes is on time  Partner with NSW Government’s investment strategy  Confidence in where to spend Task: Develop analysis tool for analysing data and identifying corridor pinchpoints.
  7. 7. Transport for NSW has commissioned several pinch points analysis for improved bus priority infrastructure, along several corridors.  Using the Public Transport Information and Priority System (PTIPS) PTIPS
  8. 8. Pinch points analysis in the bigger picture: Justification for bus priority and corridor efficiency improvements…  Clear understanding of bus corridor pinchpoints PROJECT FLOW CHART INTRODUCTION Identify problem corridor Investigation and assessment Options evaluation Corridor performance and options report Design of infrastructure solution PTIPS analysis to understand pinch points
  9. 9. The task objective: Clear illustration and understanding of corridor pinch points (problem areas)
  10. 10. DATA ANALYSIS Case study: Northern Beaches (Neutral Bay to Mona Vale) Over 820,000 bus trips (over 50 routes), 30kms or corridor. Local issues:  Traffic congestion  Weekend travel time issues  Kerbside parking  Passenger congestion at stops  Narrow lanes  Inconsistent bus priority infrastructure Identified as a priority Rapid Bus Corridor in Sydney’s Bus Future (2013)
  11. 11. DATA ANALYSIS Task strategy: Lessons learned:  Know what your end result should look like  Template MS Excel, copy-paste data sets, automated analysis  GIS analysis – good for large data analysis  Avoid taking averages of averages (use first principles) 1. Stop-by- stop analysis 2. time-point analysis
  12. 12. GEO-SPATIAL ANALYSIS Time point data analysis  Finer-grained data, identification of specific problem locations  Larger volume of data to analyse  GIS is an effective application to analyse and visualise speed and variability results.  Method:  1: Processing raw PTIPs data into format, excluding irrelevant and erroneous data.  2: Segmented the bus route into sections (106 sections, 150-170m)  3: Data imported and mapped using x,y co-ordinates  4: Identify northbound/southbound routes and data outside of corridor excluded
  13. 13. Geeta Kumar
  14. 14. GEO-SPATIAL ANALYSIS Time point data analysis Data imported and mapped using x,y co-ordinates  5: Calculated average travel times for each section, determined by interpolating the times at which the bus arrived at the segment ends.  6: Analysis was visualized on a map.
  16. 16. INTERPRETATION OF DATA Stop-based data analysis Comparing two metrics: Average Speed and Average variation Consider whole corridor – to find pinch points. Pinchpoint Pinchpoint
  17. 17. INTERPRETATION OF DATA Stop-based data analysis Pinchpoint Pinchpoint  AM Peak  Inbound services  Between Sydney Road, Balgowlah and Sydney CBD  Comparison of All stops and Express services
  18. 18. VALIDATION OF ANALYSIS Inbound traffic, PM period, Military Road at Wycombe Road (Neutral Bay) - facing West Bunching of services: buses delaying buses Inbound (Neutral Bay)
  19. 19. VALIDATION OF ANALYSIS Outbound traffic, Military Road at Murdoch Street (Cremorne) Inbound traffic, PM period, Military Road - facing West Bus lane free
  20. 20. PRESENTATION OF ANALYSIS Time point analysis (Map with colour-coded sections)  High level of detail  Efficient analysis through GIS  Identification of specific pinch point locations  Visual presentation of corridor performance metrics  Map – easy to understand Stop-stop analysis (graphical presentation)  Best use of available data  Graphical analysis efficient to produce  Connection between performance metrics and locations  Logic for pinch point identification is clear Which is better?
  21. 21. OTHER ASSESSMENT TOOLS  Opal card origin-destination data analysis  Other ticketing data and service type comparisons (all stop versus limited stops)  Busway vehicle flow and passenger capacity analysis  Current flow vs optimal capacity – efficiency enhancements  Options assessment: Detailed assessment Preliminary investigation Strategic review • Toolkit of options • TWG review • SWOT assessment • Preliminary capacity investigation • Modelling • Multi-criteria assessment
  22. 22. PROJECT OUTCOMES Tailor-made approach to measuring and understanding pinchpoints. Informed improvements to bus corridor efficiency:  New bus lanes and converted lanes to bus priority  Fewer bus stops  Bus platforms next to stops or indented bays  Extended bus lane times  Removal of roadside inhibitors (e.g. trees)  Parking removal and adjacent street parking improvements Opportunities to use the analysis in various stages of project lifecycle. Transport NSW expressed satisfaction with the outputs:  Understandable  Reliable basis for justifying planning & investment  Enables specific response to actual corridor issues
  23. 23. NEXT STEPS  Inputs into broader study on Northern Beaches corridor performance and opportunities investigation  Previously this work has fed into business cases for corridor improvements  Creating a stream-lined data analysis service for our clients – well tested and proven  Combine with other tested analysis methods and develop a toolkit for corridor performance analysis, option development and assessment  Opportunities to use method within Auckland and New Zealand comparable transport markets
  24. 24. The Big Picture LAST WORDS Source: Daily Telegraph, “Frustrated commuters want express service”, Dec 2015 (Photo: Justin Sanson) “… if we want to reduce our reliance on private cars we need better and more frequent public transport options.” The Hills Mayor, Michelle Byrne
  25. 25. Questions? Thank you! Photo source: SMH 2014 The Military-Spit-Pittwater bus corridor